In the birth country of Futuro, the craze has been the opposite for at least a decade: all natural and old fashioned materials. Log houses, maybe even stone foundation, natural circulation, clay/chalk wall finishing, tar paper, shredded newspaper + flax insulation. No glue or plastics anywhere. Some of this is first hand experience.
I think one could build a modern and retro futuro-like thing with enough cleverness. Maybe from some wicker style material? The rain proofing is a problem.
That said, the design and materials would have an impact for more innovative designs.
https://www.dwell.com/tiny-homes
https://www.houseplans.com/collection/s-tiny-modern-plans
https://metropolismag.com/viewpoints/nine-taliesin-west-most...
https://www.architectmagazine.com/design/the-last-student-sh...
Dunno why, I do love all the land-surface homes too, but I dream of having any one of the above to live out my latter days ..
How about an earthship and a converted school bus to tow a small-ish boat around?
Converted school bus? Well, the issue is, I don't wanna pay for gas, man, mmkay... ;)
Bus could be electric, or CNG, or E85, hydrogen, or B100 powered. I once met a guy at a remote intersection in Nevada who was driving a 40ft skoolie back from deep in Mexico to the PNW on collected WVO.. part of an annual migration.
https://www.hallberg-rassy.com/news/news/solar-panel-sails-2...
And for the unacquainted:
Lin and Larry Pardey, most famously, made a long life together sailing the world, first, in their homemade, engine-less 24ft cutter.
https://en.wikipedia.org/wiki/Lin_and_Larry_Pardey
Cruising in Seraffyn
https://luxurylaunches.com/transport/helios-11-solar-explore...
With a few tweaks here and there, once he gets the cat design fleshed out, I'm quite sure I'll follow his lead and do my own version in the next year or so .. its such a great idea, and my section of the worlds oceans (Croatian coastline) seems like the perfect place to field such a vessel ..